setup.c

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/*
 * arch/sh/boards/renesas/r7780rp/setup.c
 *
 * Renesas Solutions Highlander Support.
 *
 * Copyright (C) 2002 Atom Create Engineering Co., Ltd.
 * Copyright (C) 2005 - 2008 Paul Mundt
 *
 * This contains support for the R7780RP-1, R7780MP, and R7785RP
 * Highlander modules.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/ata_platform.h>
#include <linux/types.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/usb/r8a66597.h>
#include <linux/usb/m66592.h>
#include <linux/clkdev.h>
#include <net/ax88796.h>
#include <asm/machvec.h>
#include <mach/highlander.h>
#include <asm/clock.h>
#include <asm/heartbeat.h>
#include <asm/io.h>
#include <asm/io_trapped.h>

static struct r8a66597_platdata r8a66597_data = {
    .xtal = R8A66597_PLATDATA_XTAL_12MHZ,
    .vif = 1,
};

static struct resource r8a66597_usb_host_resources[] = {
    [0] = {
        .start  = 0xA4200000,
        .end    = 0xA42000FF,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = IRQ_EXT1,     /* irq number */
        .end    = IRQ_EXT1,
        .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
    },
};

static struct platform_device r8a66597_usb_host_device = {
    .name       = "r8a66597_hcd",
    .id     = -1,
    .dev = {
        .dma_mask       = NULL,     /* don't use dma */
        .coherent_dma_mask  = 0xffffffff,
        .platform_data      = &r8a66597_data,
    },
    .num_resources  = ARRAY_SIZE(r8a66597_usb_host_resources),
    .resource   = r8a66597_usb_host_resources,
};

static struct m66592_platdata usbf_platdata = {
    .xtal = M66592_PLATDATA_XTAL_24MHZ,
    .vif = 1,
};

static struct resource m66592_usb_peripheral_resources[] = {
    [0] = {
        .name   = "m66592_udc",
        .start  = 0xb0000000,
        .end    = 0xb00000FF,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .name   = "m66592_udc",
        .start  = IRQ_EXT4,     /* irq number */
        .end    = IRQ_EXT4,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device m66592_usb_peripheral_device = {
    .name       = "m66592_udc",
    .id     = -1,
    .dev = {
        .dma_mask       = NULL,     /* don't use dma */
        .coherent_dma_mask  = 0xffffffff,
        .platform_data      = &usbf_platdata,
    },
    .num_resources  = ARRAY_SIZE(m66592_usb_peripheral_resources),
    .resource   = m66592_usb_peripheral_resources,
};

static struct resource cf_ide_resources[] = {
    [0] = {
        .start  = PA_AREA5_IO + 0x1000,
        .end    = PA_AREA5_IO + 0x1000 + 0x08 - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = PA_AREA5_IO + 0x80c,
        .end    = PA_AREA5_IO + 0x80c + 0x16 - 1,
        .flags  = IORESOURCE_MEM,
    },
    [2] = {
        .start  = IRQ_CF,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct pata_platform_info pata_info = {
    .ioport_shift   = 1,
};

static struct platform_device cf_ide_device  = {
    .name       = "pata_platform",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(cf_ide_resources),
    .resource   = cf_ide_resources,
    .dev    = {
        .platform_data  = &pata_info,
    },
};

static struct resource heartbeat_resources[] = {
    [0] = {
        .start  = PA_OBLED,
        .end    = PA_OBLED,
        .flags  = IORESOURCE_MEM,
    },
};

#ifndef CONFIG_SH_R7785RP
static unsigned char heartbeat_bit_pos[] = { 2, 1, 0, 3, 6, 5, 4, 7 };

static struct heartbeat_data heartbeat_data = {
    .bit_pos    = heartbeat_bit_pos,
    .nr_bits    = ARRAY_SIZE(heartbeat_bit_pos),
};
#endif

static struct platform_device heartbeat_device = {
    .name       = "heartbeat",
    .id     = -1,

    /* R7785RP has a slightly more sensible FPGA.. */
#ifndef CONFIG_SH_R7785RP
    .dev    = {
        .platform_data  = &heartbeat_data,
    },
#endif
    .num_resources  = ARRAY_SIZE(heartbeat_resources),
    .resource   = heartbeat_resources,
};

static struct ax_plat_data ax88796_platdata = {
    .flags          = AXFLG_HAS_93CX6,
    .wordlength     = 2,
    .dcr_val        = 0x1,
    .rcr_val        = 0x40,
};

static struct resource ax88796_resources[] = {
    {
#ifdef CONFIG_SH_R7780RP
        .start  = 0xa5800400,
        .end    = 0xa5800400 + (0x20 * 0x2) - 1,
#else
        .start  = 0xa4100400,
        .end    = 0xa4100400 + (0x20 * 0x2) - 1,
#endif
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = IRQ_AX88796,
        .end    = IRQ_AX88796,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device ax88796_device = {
    .name           = "ax88796",
    .id             = 0,

    .dev    = {
        .platform_data = &ax88796_platdata,
    },

    .num_resources  = ARRAY_SIZE(ax88796_resources),
    .resource       = ax88796_resources,
};

static struct mtd_partition nor_flash_partitions[] = {
    {
        .name       = "loader",
        .offset     = 0x00000000,
        .size       = 512 * 1024,
    },
    {
        .name       = "bootenv",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 512 * 1024,
    },
    {
        .name       = "kernel",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 4 * 1024 * 1024,
    },
    {
        .name       = "data",
        .offset     = MTDPART_OFS_APPEND,
        .size       = MTDPART_SIZ_FULL,
    },
};

static struct physmap_flash_data nor_flash_data = {
    .width      = 4,
    .parts      = nor_flash_partitions,
    .nr_parts   = ARRAY_SIZE(nor_flash_partitions),
};

/* This config is flash board for mass production. */
static struct resource nor_flash_resources[] = {
    [0] = {
        .start  = PA_NORFLASH_ADDR,
        .end    = PA_NORFLASH_ADDR + PA_NORFLASH_SIZE - 1,
        .flags  = IORESOURCE_MEM,
    }
};

static struct platform_device nor_flash_device = {
    .name       = "physmap-flash",
    .dev        = {
        .platform_data  = &nor_flash_data,
    },
    .num_resources  = ARRAY_SIZE(nor_flash_resources),
    .resource   = nor_flash_resources,
};

static struct resource smbus_resources[] = {
    [0] = {
        .start  = PA_SMCR,
        .end    = PA_SMCR + 0x100 - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = IRQ_SMBUS,
        .end    = IRQ_SMBUS,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device smbus_device = {
    .name       = "i2c-highlander",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(smbus_resources),
    .resource   = smbus_resources,
};

static struct i2c_board_info __initdata highlander_i2c_devices[] = {
    {
        I2C_BOARD_INFO("r2025sd", 0x32),
    },
};

static struct platform_device *r7780rp_devices[] __initdata = {
    &r8a66597_usb_host_device,
    &m66592_usb_peripheral_device,
    &heartbeat_device,
    &smbus_device,
    &nor_flash_device,
#ifndef CONFIG_SH_R7780RP
    &ax88796_device,
#endif
};

/*
 * The CF is connected using a 16-bit bus where 8-bit operations are
 * unsupported. The linux ata driver is however using 8-bit operations, so
 * insert a trapped io filter to convert 8-bit operations into 16-bit.
 */
static struct trapped_io cf_trapped_io = {
    .resource       = cf_ide_resources,
    .num_resources      = 2,
    .minimum_bus_width  = 16,
};

static int __init r7780rp_devices_setup(void)
{
    int ret = 0;

#ifndef CONFIG_SH_R7780RP
    if (register_trapped_io(&cf_trapped_io) == 0)
        ret |= platform_device_register(&cf_ide_device);
#endif

    ret |= platform_add_devices(r7780rp_devices,
                    ARRAY_SIZE(r7780rp_devices));

    ret |= i2c_register_board_info(0, highlander_i2c_devices,
                       ARRAY_SIZE(highlander_i2c_devices));

    return ret;
}
device_initcall(r7780rp_devices_setup);

/*
 * Platform specific clocks
 */
static int ivdr_clk_enable(struct clk *clk)
{
    __raw_writew(__raw_readw(PA_IVDRCTL) | (1 << IVDR_CK_ON), PA_IVDRCTL);
    return 0;
}

static void ivdr_clk_disable(struct clk *clk)
{
    __raw_writew(__raw_readw(PA_IVDRCTL) & ~(1 << IVDR_CK_ON), PA_IVDRCTL);
}

static struct sh_clk_ops ivdr_clk_ops = {
    .enable     = ivdr_clk_enable,
    .disable    = ivdr_clk_disable,
};

static struct clk ivdr_clk = {
    .ops        = &ivdr_clk_ops,
};

static struct clk *r7780rp_clocks[] = {
    &ivdr_clk,
};

static struct clk_lookup lookups[] = {
    /* main clocks */
    CLKDEV_CON_ID("ivdr_clk", &ivdr_clk),
};

static void r7780rp_power_off(void)
{
    if (mach_is_r7780mp() || mach_is_r7785rp())
        __raw_writew(0x0001, PA_POFF);
}

/*
 * Initialize the board
 */
static void __init highlander_setup(char **cmdline_p)
{
    u16 ver = __raw_readw(PA_VERREG);
    int i;

    printk(KERN_INFO "Renesas Solutions Highlander %s support.\n",
             mach_is_r7780rp() ? "R7780RP-1" :
             mach_is_r7780mp() ? "R7780MP"   :
                         "R7785RP");

    printk(KERN_INFO "Board version: %d (revision %d), "
             "FPGA version: %d (revision %d)\n",
             (ver >> 12) & 0xf, (ver >> 8) & 0xf,
             (ver >>  4) & 0xf, ver & 0xf);

    highlander_plat_pinmux_setup();

    /*
     * Enable the important clocks right away..
     */
    for (i = 0; i < ARRAY_SIZE(r7780rp_clocks); i++) {
        struct clk *clk = r7780rp_clocks[i];

        clk_register(clk);
        clk_enable(clk);
    }

    clkdev_add_table(lookups, ARRAY_SIZE(lookups));

    __raw_writew(0x0000, PA_OBLED); /* Clear LED. */

    if (mach_is_r7780rp())
        __raw_writew(0x0001, PA_SDPOW); /* SD Power ON */

    __raw_writew(__raw_readw(PA_IVDRCTL) | 0x01, PA_IVDRCTL);   /* Si13112 */

    pm_power_off = r7780rp_power_off;
}

static unsigned char irl2irq[HL_NR_IRL];

static int highlander_irq_demux(int irq)
{
    if (irq >= HL_NR_IRL || irq < 0 || !irl2irq[irq])
        return irq;

    return irl2irq[irq];
}

static void __init highlander_init_irq(void)
{
    unsigned char *ucp = highlander_plat_irq_setup();

    if (ucp) {
        plat_irq_setup_pins(IRQ_MODE_IRL3210);
        memcpy(irl2irq, ucp, HL_NR_IRL);
    }
}

/*
 * The Machine Vector
 */
static struct sh_machine_vector mv_highlander __initmv = {
    .mv_name        = "Highlander",
    .mv_setup       = highlander_setup,
    .mv_init_irq        = highlander_init_irq,
    .mv_irq_demux       = highlander_irq_demux,
};